BK0306 Needle Bearing (Drawn Cup Needle Roller Bearing), ISO 3245

The BK0306 needle bearing (ISO 3245) has a 3 mm bore, a 6.5 mm outside diameter and a width of 6 mm. Get it as simplified STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: BK0306 bearing
• Model id: iso3245-bk0306
• Standard: ISO 3245 · size BK0306

Files

Part key	Simplified
iso3245-bk0306	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
Fw	Bore diameter under the rollers		3		3	nominal	L1
D	Outside diameter		6.5		6.5	nominal	L1
C	Width		6		6	nominal	L1
Ct	Depth to the closed end	5.2			5.2	single limit (min), modeled at the limit	L1
r	Chamfer dimension	0.3			0.3	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-ISO3245-BK-SZ-BK0306.pdf.

The BK0306 needle bearing beside the BK0408

The BK0306 is the first of the 29 ISO 3245 needle bearings published here, listed from BK0306 to BK2526.

• Bore diameter under the rollers (Fw): 3 mm on the BK0306 needle bearing, against 4 mm on the BK0408.
• Outside diameter (D): 6.5 mm on the BK0306 needle bearing, against 8 mm on the BK0408.
• Width (C): 6 mm on the BK0306 needle bearing, against 8 mm on the BK0408.
• Depth to the closed end (Ct): at least 5.2 mm on the BK0306 needle bearing, against at least 6.4 mm on the BK0408.
• Chamfer dimension (r): at least 0.3 mm on the BK0306 needle bearing, the same on the BK0408.

Other sizes

• One size larger: BK0408 Needle Bearing (Drawn Cup Needle Roller Bearing), ISO 3245, 4 mm bore, 8 mm OD, 8 mm wide.

Documents

• CC-ISO3245-BK-DS-BK0306.pdf: BK0306 datasheet: values with levels, sources
• CC-ISO3245-BK-SZ-BK0306.pdf: BK0306 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

koyo-bs007-bk, ntn-bearingfinder-bk, schaeffler-hr1-bk. Full citations: the method page and this size's datasheet.

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